1" Ball Medium Double Socket Arm with 10mm Hole Mounting Base for Motorcycle Mirror, Compatible with RAM Mounts and 1 Inch Ball Phone Holder Package Include: 1× angled 1" ball base, 1× 3.54" double socket arm . Wide Compatibility & Superior Flexibility: This angled bolt head adapter ball base is compatible with RAM Mounts and fits any industry-standard 1" ball system. The integrated ball-and-socket joint offers near-limitless adjustability, providing a reliable foundation for your motorcycle or bicycle phone mount. Easily install it on scooters, motorcycles, bikes, or any equipment featuring a standard 10mm threaded hole. Tool-Free & Effortless Installation: Designed for ultimate convenience, this 1" ball base features a 10mm mounting hole for a direct and secure connection to your motorcycle mirror stem. The 25.4mm ball head seamlessly integrates with the included double socket arm. Complete your setup in seconds with a simple, tool-free installation process—no hassle required. Premium Aluminum Alloy Construction: Built for the long haul, both the adapter base and the double socket arm are high-strength aluminum alloy. This robust construction provides exceptional durability, corrosion resistance, and reliable performance even in harsh riding conditions. The 1" rubber-coated ball ensures a vibration-resistant, non-slip grip for a rock-solid hold. 360° Full-Angle Adjustment: Achieve the perfect viewing angle with ease. The rubber-coated ball head allows for smooth 360° rotation and multi-directional positioning. Simply tighten the locking knob to securely lock your phone mount in place, providing optimal visibility for navigation, music control, and GPS tracking during your ride.